Heat a large nonstick pan over medium heat.spray with cooking spray. Add 1/4 cup batter, tilting the pan to evenly cover or spread out in a circle. Cook until just set and browned, about 1 to 2 minutes. Flip and cook a few more seconds

For the filling: Combine farmers cheese, cream cheese, vanilla sugars, yolks and sugar in a large bowl and whisk until smooth. Cover and refrigerate until ready to use. (Can be made up to 1 day ahead.)